Twin Tropical Cyclones #NASA

In January 2015, two tropical cyclones — Diamondra and Eunice—swirled over the central Indian Ocean. Neither storm was particularly strong, nor were they expected to make landfall or cause significant damage. But their close proximity offered striking views to satellites. On January 28, 2015, geostationary satellites maintained by EUMETSAT and the Japanese Meteorological Agency collected the infrared data used to make the composite image at the top of the page. The Visible Infrared Imaging Radiometer Suite (VIIRS) on Suomi NPP captured the lower image, another composite. Note that three separate swaths of data (acquired at 07:25 UTC, 09:05 UTC, and 10:50 UTC) were stitched together to produce the VIIRS image. The two storms were about 1,500 kilometers (930 miles) apart on January 28, 2015, when VIIRS imaged them. Eunice, the stronger of the two, was located to the west of ...